- Margaret Cranmer
German firm of piano makers. C(arl) F(riedrich) Theodor Steinweg (b Seesen, 6 Nov 1825; d Brunswick, 26 March 1889), the eldest son of H.E. Steinweg, continued the family piano-making business in Seesen when his father and the rest of the family emigrated in 1850 to New York where they founded Steinway. In 1855 the German firm moved from Seesen to Wolfenbüttel, where in 1858 (Georg) Friedrich (Carl) Grotrian (b Brunswick, 13 Jan 1803; d 11 Dec 1860), who had sold his Moscow music shop and piano-making business, became Theodor’s partner. The firm then moved to Brunswick.
In 1865 Theodor emigrated to New York to assist his father, having sold his share in the business to Wilhelm Grotrian (b Moscow, 12 Aug 1843; d Brunswick, 21 Feb 1917, the son of Friedrich Grotrian), Adolf Helfferich and H.O.W. Schulz, who continued the business under the name C.F.Th. Steinweg Nachf. This trade name was changed to Grotrian, Helfferich, Schulz, Th. Steinweg Nachf. in ...